Refactor release workflow (extra-bicep-artifacts stage)

[Gordonby]

Situation

In the release workflow we have a stage where we compile bicep artefacts CreateExtraBicepArtifacts

If this fails, it blocks the release.

Solution

We need to refactor the CreateExtraBicepArtifacts stage into its own resuable workflow, and call it during PR to ensure release won't fail.
As the stage creates artefacts we will need to introduce a new parameter to opt out of artefact creation.

[github-actions]

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